Nancy Mattix (Plunket)

Nancy Mattix (Plunket)

This is a long-shot, but I was hoping to find out how my greatx2 grandmother, Nancy Mattix (maiden name 'Plunket') died. She died at 40 in Linn, Cedar County Missouri in 1865. Her husband was John Harvey Mattix Jr. They had nine children together. In addition to possible information about her death, is it possible there is a marker for her in a cemetery there? Any information would be more than appreciated. Thanks!